What type of hazard does alpha radiation pose?

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Multiple Choice

What type of hazard does alpha radiation pose?

Explanation:
Alpha radiation has very high ionizing power but extremely limited range. It can be stopped by a sheet of paper or a few centimeters of air, so external exposure from an alpha source is minimal. The real danger comes when alpha-emitting materials enter the body—through inhalation, ingestion, or absorption. Inside the body, alpha particles deposit a large amount of energy over a short distance, causing serious damage to nearby cells and tissues. Because of this, the primary hazard is internal exposure rather than external exposure or environmental exposure in typical scenarios.

Alpha radiation has very high ionizing power but extremely limited range. It can be stopped by a sheet of paper or a few centimeters of air, so external exposure from an alpha source is minimal. The real danger comes when alpha-emitting materials enter the body—through inhalation, ingestion, or absorption. Inside the body, alpha particles deposit a large amount of energy over a short distance, causing serious damage to nearby cells and tissues. Because of this, the primary hazard is internal exposure rather than external exposure or environmental exposure in typical scenarios.

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